Home » Amazon » AWS Certified Solutions Architect - Professional v.2 » Which of the following is not correct about ec2-net-utils?
One of the components that is part of ec2-net-utils used with ENI’s is ec2ifscan.
Which of the following is not correct about ec2-net-utils?
A. ec2-net-utils generates an interface configuration file suitable for use with DHCP.
B. ec2-net-utils extends the functionality of the standard if up.
C. ec2-net-utils detaches a primary network interface from an instance.
D. ec2-net-utils identifies network interfaces when they are attached, detached, or reattached to a running instance.
Correct Answer: C
Explanation/Reference:
Each instance in a VPC has a default elastic network interface (the primary network interface) that is assigned a private IP address from the IP address range of your VPC. You cannot detach a primary network interface from an instance.
You can create and attach additional elastic network interfaces. Amazon Linux AMIs may contain additional scripts installed by AWS, known as ec2-net-utils. One of the components that is part of ec2-net-utils used with ENI’s is ec2ifscan. Its function is to check for network interfaces that have not been configured and configure them.
http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/using-eni.html
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